Welding apparatus.



P. H. FRIEL. DECD.

H. D. fRlEL. ADmmsTKAToR.

WELDING APPARATUS.

APPucATmN FILED ocr. 5. 1916. nENEwED ocr. 2|. me

P. H. FRIEL. DECD.

I-I. D. TRIEL. ADMINISTRATOR.

WELDING APPARATUS.

APPLICATION FILED 0cT.5, 1916. RENEwED ocT. 21. IgIs P. H. FRIEL. DECD.

H. D. WEL, ADMINISTRATOR. WELDING APPARATUS.

APP L|CAT|0N FILED OCT- 5, 1915- RENEWED OCT- 21. 1918. 1,288,866.Patented Dec. 24, 1918.

4 SHEETSSHEET 3.

P. H. FRIEL. DEC'D.

H. D. TRIEI., ADMINISTRATOR.

WELDING APPARATUS. APPLICATION FILED ocTs. 1916. ITENEwED ocT. 2I.IQIII. 1,288,866.

4 SHEETS-SHEET 4.

)l ("AIIII I ffwl Patented Deo. 24, 1918.

lill

@NT I sTATEs PATENT OFFICE.

PATRICK H. FRIEL, 0F KENOSHA, WISCONSIN; HATTIE D. FIEL ADMINISTRATOR 0FSAID PATRICK H. FRIEL, DECEASED.

WELDING APPARATUS.

Specification of Letters Patent.

Application led- October 5, 1916, Serial No. 123,802. Renewed October21, 1918. Serial No. 259,141.

concise, and exact description, reference being had to the accompanyingdrawings, toi-ming a part of this specification.

My invention relates to welding or uniting apparatus for joining -ironor other metallic parts and has for-one of its objects the provision ofmechanism whereby welding or union may be eected while the articles orparts bein welded or united are in transit, and has or another of itsobjects the provision of means whereby welding implements may beeriodically cooled. The welding is prefera ly electrically effected.l

(.)ne of the uses to which my invention has been put is the welding ofthe seams in tubing formed of rolled sheet iron or steel and inpractising my invention when applied to Ithis use I make use of thegripping mechanism, that is used for drawing the tubing from the machinethat forms it, as a part of the welding apparatus. After this grippingmechanism has performed its function in drawing the tubing as far as itis de signed to do I immerse the gripping jaws of the gripping mechanismin water or other tooling Huid.

I will fully describe my invention by reference to the accompanyindrawings showing the adaptation thereo in an apparatus that is employedfor drawing or transferring hollow tubing from one place to another, asfor example, from a tube forming machine. In the drawings:

Figure 1 is a side elevation partially in section of mechanismillustrating this invention in its preferred form, in the act of drawinga tube.

Fig. 2 is a plan view of the piechanism shown in Fig. 1, the tube beingomitted to facilitate illustration.

Fig. 3 is an enlarged sectional detail end view on the irregular line 33 of Fig. 2.

Fig. 4 is a central enlarged view taken on the line 4:-4 of Fig. 3, andon the line 4-4 of Fig. 5.

Fig. 5 is a sectional endv view on the line 5 5 of Fig. 4, showing thetube gripping jaws closed.

' portion of the machine.

Like parts are indicated by similar characters, of reference throughoutthe different figures. l

I will rst describe the structure illustrated when used as a tubedrawing or transferring machine and will thereafter describe my weldingmechanism and means for coollnthe same.

he machine illustrated is supported upon one side upon standards 20spaced apart by any suitable rigid members not interfering with theoperative parts of the machine, and particularly by the channel irons 22spaced apart as shown in Fig. 3 to receive the spe- Patented'Dec. 24,1918.

cially formed U-shaped girder 24 having in its upper surface a track 26within which theJ enlarged primary Alink ends 28 of the primary chainlinks 30 slide. Journaled in the end standards 20, heretofore described,

' are shafts 32 and 33, the latter driven by any suitable source ofpower 106. Each such shaft carries a sprocket wheel 34, provided in theordinary manner with teeth 36 adapted to mesh with the primary links 30of the chain, to be hereafter more' fully described, and propel it sothat the upper portion of the chaintravels from right to eft along thetrack 26 when the machine is viewed in Fig. 1.

yThe chain is made up of pairs of primary links 30, heretoforedescribed, placed side by side and provided with suitable pivot pins 381n their opposite ends in the ordinary manner. Between each successivepair to provide two upwardly rising blocks or lugs 44 and 46, each beinof sufficient height to provide openings t erein marked respectively 48and 50 through which the hinge pin 52 of the gripping jaws, to behereafter described, may pass. The block or 1u 46 is substantiallyhigher than is required merely to provide suflicient bearing for suchhinge pin, thus providing a bearing surface 54 of substantial sizeagainst which the gripping jaws or parts thereof may take bearing and besupported when the fully equipped chain is moved to the right, as viewedin Fig. 9.

Pivoted on the hinge pin 52, which, as above indicated, is insertedthrough the parts 44 and 46 of each link 40, and between such blocks 44and 46 are a pair of hinge arms 56 terminatin at their outer ends inclamping jaws 60, c early shown in perspective in Fig. 7. Each pair ofclamping jaws 60 interfit together, as is clearly shown in Fig. 5, andeach such jaw` 60 is recessed in the semi-circular line 62 whose centerof curvature is at 64. The center of curvature just described lies inthe plane of contact 66 between the adjacent jaws 60, whichhplane alsoincludes the center of pivot pin 52, heretofore described, the resultbeing that when a tube 70 or other article to be worked upon is placedin position, shown in Figs. 5 and 6, the jaws 60 may be freely movedbackward and forward between the positions in which they appear in Figs:5 and 6 without, in any position, interfering with the tube or havingtheir movement interfered with by the tube.

The jaws 60 are urged from the position of Fig. 5 toward the openposition of Fig. 6 by a spring 84 of any suitable construction, locatedat any convenient point.

In order to insure positive opening of the jaws 60 at the proper pointin the travel of the chain bearing all the parts just described, atriangular curved separator 86 may be, if desired, secured in positionas shown in several of the figures, having inclined cam surfaces 87terminating in a point 88 adapted to engage the sides 89 of a suitablyformed recess 90 formed in the central top portion of each clamping jaw`60. In the particular machine here illustrated, the separator 86 issecured in positionA by the bolt 92 passing through a fixed part of themachine 93. Y

Cut transversely of the machine in member 24 are suitably placed andarranged dove-tail slots 94 within which slide dovetail members 95depending from the long horizontal plates 96 carrying yokes 97 in whichare journaled a plurality of rollers Rigidly .attached to member 24 areparallel bars'99 in which are placed screws 100 adapted to adjustablybear upon the yokes 97 and thus force the rollers 98 inward toward thecenter of the machine, and against 'the outer vertical faces of thegripping jaws 60, heretofore described. By adjustin the screws. 100 inand out the pressure o the rollers 98 on the jaws 60 may be varied.

The shaft 33 is driven by any suitable power attached to a pulley 104 ona shaft 105 carrying a pinion 106 meshing with a gear 108 on shaft 33.Any other suitable means for driving this shaft may be applied withoutdeparting from this invention.

At the left hand or entrance end of the machine, as illustrated in thedrawings, are placed two converging cam tracks 110 between which thegripping jaws 60 pass before entering the space between the rollers 98for the purpose of closing the gripping jaws upon the tube 70preparatory to the jaws being rigidly compressed by the rollers 98 onthe tube, thus insuring their takingI hold of the tube for the purposeof drawing, as will'more fully appear hercafter.

Each successive pair of jaws 60 coming from the bottom of the chain, asviewed in Fig. 1, strikes the cam tracks 110 and are forced togetheragainst the action of their spring 84. From these cam tracks 110 theparticular pair of gripping jaws 60 in question pass between the rollers98 and travel between them through the machine until after leaving thelast pair of rollers 98,.they engage the point 88 of the triangular cammember 86, which, as heretofore described,

separates the jaws 60 notwithstanding any friction which may preventspring 84 from separating them, as it should, whereupon such open pairof jaws pass down wheel 34 at the right hand end of the machine, thencein open position along the bottom of the machine, and finally return tocani tracks '110 for the repetition of the operation just described. Infeeding tubes or other articles to' be drawn to the machine, the freeend chine just as long as there is any tube to be drawn furnished by themanufacturing machine (not shown) placed at the left lof the machineshown.

The gripping jaws are fastened to the chain drive and are hinged theretoin such a way that they may be moved into and out of different relationswith reference to the tube or other product to be worked upon withoutinterfering therewith, thus greatly reducin' the number oi partsheretofore required 1n devices of this class. Furthermore, the grippingjaws open automatically under spring action which is rendered posltiveby the use of the cam devlce 86, and the pressure of the gri ping aws isadjustable through the use o the a justing screws The gripping orclamping jaws of each clamp carry or are provided with a pair ofterminals a b, one terminal being provided upon each jaw, theseterminals traveling with the pipe that is pulled by the' clamps. Theterminals face each other in the presence of the butt joint c formed bythe opposing and engaged edges of the curled sheet forming the plpe. Apair of stationary current conveying brushes or contacts d and c areprovided and against which each pair of contacts or terminals a bsuccessively rub as they travel. The pipe engaging clamps are glaced invery vclose succession, each clamp eing desirably touched by itspreceding and succeeding neighbor when holding the pipe. By thisarrangement the butt seam c is welded continuously :from end to en`d ofthe pipe.

In the preferred embodiment ofthe invention the clamping jaws are ofcomposite formation, each jaw including an upper copper portion t0constitute the terminal a or b, a body of mica f between each ter--minal and the base portions of the corresponding clamp jaw, and baseportion g of liber that is mounted upon the support L carried by theparts of the clamp jaws that are directly hinged together. `The fiberportions g are desirably recessed at i so as to prevent the heat in thepipe from materially affecting the fiber bodies g. The contacts orbrushes d c are desirably located near the place where the clamps aredisengaged from the tube or pipe so that the heat from the pipe will nothave much opportunity to travel to the ber bodies g. I desirably providea basin c into which the clamps dip after they leave the tube or pipe,this basin k containing cooling uid in which the copper terminals a bare immersed. By means of the basin la cool clamping jaws are presentedto the pipe when being brought into engagement therewith, these clampingjaws (or the copper portions a b thereof) being only heated when nearthe end of their journey.

Mechanism for drawing articles, similar t0 the article drawing mechanismherein shown but minus the arrangement for welding, forms the subjectmatter of my copending application Serial No. 117,386, iled August 28,1916.

While I have herein shown and particularly described the preferredembodiment of my invention I do not wish to be limited to the precisedetails'of construction shown as changes may readily be made withoutdeparting from the spirit of my invention, but having thus described myinvention I claim as new and desire to secure by Letters Patent -thei'ollowi-ngz- 1. '.lhe combination 'with a clamp for application toobject portions to be welded; means for effecting the travel of saidclamp and thereby of the object portions engaged thereby; terminalscarried by the clamp, one upon each jaw thereof, for-establishing theflow of welding heat producing electric current in the presence ofobject portions Vto be welded; and current conveying brushes againstwhich said terminals rub as they travel. l

2. The combination with a clamp for application to object portions .t0be welded and inclusive of two jaws; of means for effecting the travelof the clamp and object portions to which it is applied; terminalscarried by the clamp, one upon each jaw thereof, for establishing theflow of welding heat producing electric current in the presence ofobject portions to be welded; and current conveying brushes againstwhich said terminals rub as they travel.

3. The combination with a clamp for application to object portions to bewelded; means for eii'ecting the travel of said clamp and thereby of theobject portionsengaged thereby; terminals carried by the clamp forestablishing the iow of welding heat producing electric current in thepresence of object portions to be welded; and currentl conveying brushesagainst which said terminals rub as they travel.

4f. The combination with a clamp for application to object portions tobe wvelded; of means for effecting the travel of the clamp and objectportions to which it is applied; terminals carried by the clamp forestablishing the flow of welding heat producing electric current in thepresence of object p0rtions to be welded; and current conveying brushes'against which said terminals rub as they travel.

5. The combination with a clamp for application to object portions to bewelded; 115 r means for effecting the travelof said clamp and thereby ofthe object portions engagedthereby; and terminals carried by the clamp,one upon each jaw thereof, for establishing the How of welding heatproducing electric current in the presence of object portions to be|welded.

6. The combination with a clamp for ap# plication to object portions tobe welded and inclusive of two jaws; of means for effecting the travelof the clamp and object portions to which it is applied; and terminalscarried by the clam one upon each jaw thereof, for establishing the iowof welding heat producing electric current in the presence of objectportions to be welded.

7. The combination with a clamp for application to object portions to beWelded; means for effecting the travel of said clamp and thereby of theobject portions engaged thereby; and terminals carried by the clamp forestablishing the flowvof Welding heat producing electric current in thepresence of object portions to be Welded.

8. The combination With a clamp for application to object portions to beWelded; of means for effecting the travel ofthe 'clamp and objectportions to Which it is applied; and terminals carried by the clamp forestablishing the flow of Welding heat 'producing electric current in thepresence of object portions to be Welded. f

9. The combination With a pair of termif nals for establishing the flow`of Welding heat producing electric current; of means for causing thetravel of such terminals and object portions to be Welded in thepresence of each other and in the same direction whereby such objectportions may be Welded While in transit. l

10. The combination with a pair of terminals for establishing the HOW ofWelding heat producing electric current; of means for` progressivelychanging the place of passage of such current and causing ob-jectportions to travel in the presence of the Welding heat produced by suchcurrent.

l1, The combination with means for effecting the travel of metalobjects;of means for effecting the passage of Welding heat producing electriccurrent in the presence of moving object portions to |Weld the same andinclusive of traveling and stationary circuit continuing portions.

12. The combination With means for effecting the travel of metalobjects; of means for effecting the passage of .Welding heat producingelectric current in the presence of moving object portions to Weld thesame and inclusive of circuit continuing portions that are in movingrelation with each other and one of which moves in the direction oftravel of the object portions being Welded.

13. The combination With means for effect'- ing the travel of metalobjects; of means moving-in the direction of travel of the objectportions being Welded for effecting the passage of Welding heatproducing lelectric current inthe presence of moving object portions toWeld the same.

14;. The combination |With means for effect- 55 irig the travel of'metal objects; of means for e ecting the passage of welding heatproducing electric vcurrent in the presence of ence of object portionsto be lwelded; and

terminal engaging contacting means succes sively engaged by theterminals.'

17. The combination with a plurality of closely approximated clamps;means vfor effecting their travel While they engage object portions; andmeans carried by 'said clamps for establishing the flow of Welding heatproducing electric current in the presence of object portions to beWelded.

18. The combination With means for establishing the flow of Welding heatproducing electric current; of means for effecting the travel of theaforesaid means; and a cooling agency to Which the first aforesaid meansare brought. 1

19. The combination with a ,Welding means; of cooling means; and meansfor effecting the travel of the Welding means to the cooling means.

20. The combination with means for producing 'Welding heat andprogressively changing the locality thereof; of means for causingobjects that are to 'be Welded to travel in the presence of the Weldingheat.

2l. The combination With means for effecting the travel'of objects; oftraveling means for effecting union between moving object porltlionsWhile in transit and moving there- Wit In Witness whereof, I hereuntosubscribe my name this 28th day of September, A. D. 1916.

PATRICK H. FRIEL.

